Question

因此，我试图制作一个脚本来在网站上发出请求，然后比较是否有新项目添加到请求中，这意味着是否有新项目-请提醒我，如果没有。在几分钟内请求访问同一页面。

所以我现在遇到的问题是实际打印到一个告诉我的列表：

TypeError: string indices must be integers

但是每当我打印元素时，它只会给我打印“ id”，我不明白原因-

代码外观：

   resp = s.get(url)



    list = []
    i = 0
    for element in resp.json()['threads']['product']:
        print(element) #<--- this gives me a print of "id"
        list.append(element['fullTitle'])
    #ERROR - list.append(element['fullTitle'])
    #TypeError: string indices must be integers
        i+=1

    print(list)

    while True:
        try:
            new_list = []
            url = 'https://hellowebsite.com'
            resp = s.get(url)

            for element in resp.json()['threads']['product']:
                new_list.append(element['fullTitle'])

            print(new_list)

            for link in new_list:
                if link not in list:
                    print('New item found! - ' + link)


            else:
                print("No new itemfound!")
                time.sleep(10)

        except:
            randomtime = random.randint(6, 12)

Json代码：（它尚未完全完成，但看起来像这样）

{
    "country": "GB",
    "locale": "Thrill",
    "threads": [{
                "id": "f44291998750ce50301f36607c7996b5db5a9c3b",
                "interestId": "57d4d929-694c-4fdd-9277-f0df465cd7c7",
                "createdDate": "2018-06-26T08:05:24.000",
                "product": {
                    "id": "b0bfdaa1-140c-54de-b040-66854ec62d1b",
                    "interestId": "a53256c1-983b-43d5-895c-c5b7c3eedc85",
                    "colorCode": "100",
                    "fullTitle": "Item Number 1",
                }
            },
            {
                "id": "0c132053034f79c08dd474d6371875fe421e8694",
                "interestId": "ceb1c5f5-4ff2-43f4-8330-d537d1a4f5f9",
                "createdDate": "2018-06-26T08:24:42.000",
                "product": {
                    "id": "2b7830e3-2e36-54cd-a290-29c38493b290",
                    "interestId": "8aaeb398-91d6-45f1-b0d0-f4e8561e62fb",
                    "colorCode": "800",
                    "fullTitle": "Item Number 2",
                }
            },
            {
                "id": "985ff4b1bb969dd7a95ea589aff4d5f4710ab69e",
                "interestId": "aa73be8b-793e-4d78-b512-e80e2a019599",
                "createdDate": "2018-06-25T10:20:47.000",
                "product": {
                    "colorCode": "001",
                    "fullTitle": "Item number 3",

                }.....

能将所有fullTitle打印出一个列表然后继续进行比较的建议是什么？

编辑全曲

resp = s.get(url)

for element in resp.json()['threads']['product']['fullTitle']:
    print(element)

错误

Process Process-1:
Traceback (most recent call last):
  File "C:\Users\Username\AppData\Local\Programs\Python\Python36\lib\multiprocessing\process.py", line 249, in _bootstrap
    self.run()
  File "C:\Users\Usersname\AppData\Local\Programs\Python\Python36\lib\multiprocessing\process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\Test.py", line 84, in script
    for element in resp.json()['threads']['product']['fullTitle']:
TypeError: list indices must be integers or slices, not str

Answer 1

您正在遍历错误的内容。这里的列表是“线程”，其中的每个元素都有一个“产品”字典，其中包含“ fullTitle”元素。所以您要遍历：

for thread in resp.json()['threads']
    print(thread['product']['fullTitle'])

Python-如何将所有json打印到列表中

1 个答案: